I'm curious if there is a function to determine volume of an object. For Example, if I draw a 12" square and pull it up 12" I get a 1 cu.ft cube. Then if I cut, say a 6" dia. hole through the cube, how do I determine the volume of the cube after the hold is made? I could figure the volume of the cube less the volume of the hole, easy enough but my pea brain stops right about there. If I continue to add or subtract things, say I truncate one of the corners I'm pretty much lost with volume.
Below is a pic of a speaker cabinet I build. I'm trying to model it in Sketchup and establish internal volume based on what size I model it at. Any ideas?
Thanks
Chris